In which episode did Mr. Fu learn that the Queen had harmed Gege?

Princess Zhu Huan Part II Episode 46

When everyone was ready to pay their respects to the queen, Erkang caught a eunuch in the imperial garden, which was the vicious killer Erkang and others met when they fled. In order to protect themselves, the eunuch finally exposed the plot and misdeeds of the Queen who framed Wei Zi and others several times. Gan Long flew into a rage when he learned that! So he ordered the queen and Sister Rong to be beheaded. However, under the guidance of the idea that "the greatest virtue in life is forgiveness", the kind Wei Zi took out a gold medal order to intercede for Sister Rong and the Queen. The queen mother and all the people present were deeply moved by her noble sentiments, and everyone begged for mercy for the queen mother and Sister Rong.